13121202040 has 32 divisors (see below), whose sum is σ = 29583370080. Its totient is φ = 5237695872.

The previous prime is 13121202023. The next prime is 13121202041. The reversal of 13121202040 is 4020212131.

13121202040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121202041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317307 + ... + 356266.

It is an arithmetic number, because the mean of its divisors is an integer number (924480315).

Almost surely, 2^13121202040 is an apocalyptic number.

13121202040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121202040 is an abundant number, since it is smaller than the sum of its proper divisors (16462168040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13121202040 is a wasteful number, since it uses less digits than its factorization.

13121202040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674071 (or 674067 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 13121202040 its reverse (4020212131), we get a palindrome (17141414171).

The spelling of 13121202040 in words is "thirteen billion, one hundred twenty-one million, two hundred two thousand, forty".